Isovector Axial Vector Form Factors of Octet-Decuplet Hyperon Transition in QCD

TL;DR

This paper calculates the isovector axial vector form factors for hyperon transitions using light-cone QCD sum rules, incorporating higher-twist corrections and updated distribution amplitudes.

Contribution

It introduces a comprehensive calculation of hyperon transition form factors within LCSR, including twist-6 distribution amplitudes based on conformal symmetry.

Findings

Form factors computed with higher-twist corrections

Updated $\Sigma$ baryon distribution amplitudes up to twist-6

Results enhance understanding of hyperon structure in QCD

Abstract

We calculate the isovector axial vector form factors of the octet-decuplet hyperon transitions within the framework of the light-cone QCD sum rules (LCSR) to leading in QCD and including higher-twist corrections. In particular, we motivate the most recent version of the $\Sigma$ baryon distribution amplitudes which are examined up to twist-6 based on conformal symmetry of the massless QCD Lagrangian.